diff --git a/lib/ipizza/provider/base.rb b/lib/ipizza/provider/base.rb
index 1528e06..81d3ac7 100644
--- a/lib/ipizza/provider/base.rb
+++ b/lib/ipizza/provider/base.rb
@@ -61,8 +61,8 @@ def authentication_request(service_no = 4011, param = {})
         req.sign_params['VK_REPLY'] = '3012'
       when '4012'
         req.sign_params.merge(
-        'VK_REC_ID' => self.class.rec_id,
-        'VK_NONCE' => param[:vk_nonce]
+          'VK_REC_ID' => self.class.rec_id,
+          'VK_NONCE' => param[:vk_nonce]
         )
       end